Underwater surveys with mobile arrays

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Underwater surveys with mobile arrays
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Imaging with electrostatic arrays
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2D and 3D models
2D
3D
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3D resistivity imaging
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3D electrode configurations
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3D survey strategies
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3D survey of a Roman villa, Orbe-Boscéaz
(Switzerland)
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3D survey of a Roman villa, Orbe-Boscéaz
(Switzerland)
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Organic pollutants
Photos P. Martínez Pagán, Universidad
Politécnica de Cartagena
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Organic pollutants
Source Martinez Pagan, 2006, PhD thesis
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3D imaging of a waste site
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• 3. Survey strategies and interpretation
• Borehole and cross-hole surveys

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Measurements in boreholes
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Electrical well-logging
Source www-ig.unil.ch/cours
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Electrostatic measurementsin a single borehole
Source Leroux, Palma Lopes, LCPC
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Electrostatic measurementsin a single borehole
(pseudosection)
Source Leroux, Palma Lopes, LCPC
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2D cross-hole electrical tomography
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Cross-hole configurations
One remote current electrode
One remote potential electrode
Four- electrode systems
Source Bing and Greenhalgh, 2000, Geophysical
Prospecting 48
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Anomaly effect
Pole-pole pseudosection
Source Marescot, 2002, EEGS meeting, Aveiro,
Portugal
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2D cross-hole inversion